<?php
class Person
{
    public static $hand = "手";
    public static $foot = "脚";
     public static function work()
     {
         //echo (self::$hand);
         return "yes something just like this";
     }
}
class Imooc extends Person
{
    public function play()
    {
        return parent::work();
    }
}
$im = new Imooc();
echo($im->play());

                      /*
   o                 /' ) 
                   /'   (                          ,
               __/'     )                        .' `;
o      _.-~~~~'          ``---..__             .'   ;
 _.--'  b)                       ``--...____.'   .'
(     _.      )).      `-._                     <
 `\|\|\|\|)-.....___.-     `-.         __...--'-.'.
   `---......____...---`.___.'----... .'         `.;
                                    `-`           `*/ 